#<stdlib.rip>
0  0I[empty string]
'a <strpush>
'b <strpush>
'  <strpush>
'4 <strpush>
'2 <strpush>
9i <strpush>

0
'a <strpush>
'b <strpush>
'c <strpush>
'd <strpush>
'e <strpush>
'f <strpush>
9i <strpush>
<strcat>
<strprint>

'a 'b 'c 'd 'x 'y 'z 9i  8 <mkstr> <strprint>