from sys import stdin
import itertools
def is_subsequence(pattern, items_to_use):
items_to_use = (x for x in items_to_use)
return all(any(x == y for y in items_to_use) for x, _ in itertools.groupby(pattern))
for a, b in itertools.zip_longest(*[stdin]*2):
a = a.strip()
b = b.strip()
print(f"a={a} b={b} is_subsequence={is_subsequence(a, b)}")
ZnJvbSBzeXMgaW1wb3J0IHN0ZGluCmltcG9ydCBpdGVydG9vbHMKCmRlZiBpc19zdWJzZXF1ZW5jZShwYXR0ZXJuLCBpdGVtc190b191c2UpOgoJaXRlbXNfdG9fdXNlID0gKHggZm9yIHggaW4gaXRlbXNfdG9fdXNlKQoJcmV0dXJuIGFsbChhbnkoeCA9PSB5IGZvciB5IGluIGl0ZW1zX3RvX3VzZSkgZm9yIHgsIF8gaW4gaXRlcnRvb2xzLmdyb3VwYnkocGF0dGVybikpCgoKZm9yIGEsIGIgaW4gaXRlcnRvb2xzLnppcF9sb25nZXN0KCpbc3RkaW5dKjIpOgoJYSA9IGEuc3RyaXAoKQoJYiA9IGIuc3RyaXAoKQoJcHJpbnQoZiJhPXthfSBiPXtifSBpc19zdWJzZXF1ZW5jZT17aXNfc3Vic2VxdWVuY2UoYSwgYil9IikK