Keystrokes mapping to sylheti (at present, the same as Bengali) characters:

English letter (or combination)              Translated                                    Example
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a                                                               AA-kar                                B[a]t     (rice)
A                                                              AA                                        [A]m      (mango)
b                                                               bo                                          [b]ka      (scold)
B                                                              Bho                                        [B]at      (rice)
c                                                               cho                                         [c]ur       (thief)
C                                                              CHO                                      [C]ad     (ceiling)
d                                                               do                                          [d]rja      (door)
dh                                                             DHo                                      [dh]an    (paddy)
D                                                              DO                                        [D]ak      (mail/call)
DR                                                            DRO                                     c[DR]    (slap)
e                                                               AE-kar                                h[e]        (he)
E                                                              AE (letter)                           [E]k       (one)
f                                                                fo                                           [f]altu    (for nothing)
g                                                               go                                          [g]an      (song)
G                                                              GHo                                      [G]am    (sweat)
h                                                               ho                                          [h]at       (hand)
i                                                                ee-kar                                  c[i]n[i]   (sugar)
I                                                                Hrosho-ee (letter)             [E]lish    (fish)
j                                                                Borgyo-jo                            AE[j]      (today)
J  or z or Z                                               Ontosto-jo                           [z]ela      (like that)
k                                                               ko                                          [k]ila       (like how)
K                                                              Kho                                       [K]et       (field)
l                                                                lo                                           [l]eKa     (write)
m                                                              mo                                         [m]iCki   (cunning/shrewd)
n                                                               dontyo-no                            [n]era      (bald)
o                                                               o-letter                                [o]jgr       (python)
oi                                                              oi-kaar                                 k[oi]        (fish)
ou                                                             ou-kaar                                c[ou]bacca (water tank)
O                                                              O-letter                               [O]la
p                                                               po                                          [p]DRa    (study)
r                                                                ro                                          [r]aIt        (night)
s                                                               dontyo-sho                          [s]at        (seven)
sh                                                             talobbo-sho                         Eli[sh]
t                                                                to                                           [t]ala      (lock)
th                                                              tho                                         [th]ala    (dish)
T                                                               TO                                         [T]an        (pull)
TH                                                            THO                                      [TH]anDa  (cold)
u                                                                hrosho-u                              l[u]ci          (eatable)
U                                                               hrosho-u (letter)                 [U]TH        (get up)
y                                                               ontosto-o                             myla           (dirt)
ya                                                             jofola+aakar                          dh[ya]n     (meditation)
full-stop (.)                                             dari
comma  (,)                                                comma