C1111233133313231133133313231333133313113313113313331331121111331333222211   >>    C111123313331323113313331323133313331311331311331333133112111133133322221   <<    C1111233133313231133133313231333133313113313113313331331121111331333222213   >>      C1111233133313231133133313231333133313113313113313331331121111331333222212   >>