C1111133313331323223313331333133313113313231323133313113313222212331   >>    C111113331333132322331333133313331311331323132313331311331322221233   <<    C1111133313331323223313331333133313113313231323133313113313222212333   >>      C1111133313331323223313331333133313113313231323133313113313222212332   >>