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)}")