if~if statemnet~if | then
if~if (else) statemnet~if | then/n/n/else
fors~for (no begin/end)~for | :=  to  do/n/
forb~for (begin/end)~for | :=  to  do/n/begin/n//n/end;/n/
proc~procedure~procedure |();/n/begin/n//n/end;