def test_example9(): input_str = """abcdefgg abcdefg abcdefgabcdefg """ assert sverka(input_str) == "NO"
def test_example10(): input_str = """ """ assert sverka(input_str) == "YES"
def test_example7(): input_str = """aatcccZ123AFE abbaffZEF aatabbacccffZ123ZAFEEF """ assert sverka(input_str) == "YES"
def test_example8(): input_str = """ abbaffZEF abbaffZEF """ assert sverka(input_str) == "YES"
def test_example6(): input_str = """aatcccZ123 abbaffZ aatabbacccffZ123Z """ assert sverka(input_str) == "YES"
def test_example5(): input_str = """acaccZZ123 abbaff aabbaacccff123ZZ """ assert sverka(input_str) == "NO"
def test_example1(): input_str = """bbabba bcacabbccc bbcacbabbcabbac """ assert sverka(input_str) == "NO"
def test_example4(): input_str = """acacc abbaff aabbaacccff """ assert sverka(input_str) == "NO"
def test_example3(): input_str = """aaccc abbaff aabbaacccff """ assert sverka(input_str) == "YES"