# c-ll1
# LL(1)
start = s .

s = i ("=" e | ttail etail) .
s = n ttail etail .
s = "(" e ")" ttail etail .

e = t etail.
etail = { "+" t | "-" t } .

t = f ttail .
ttail = [ "*" t | f "/" t ].

f = i .
f = n .
f = "(" e ")" .

