push 3
push 2
use <(2)
if(15)
push 5
push 3
use <(2)
if(9)
push "a"
use print(1)
else(12)
push "b"
use print(1)
endif
push "c"
use print(1)
push 2
push 2
use <(2)
elseif(21)
push "d"
use print(1)
else(24)
push "e"
use print(1)
endif