C1111233133313231133133313331333133311221123121111133313113313231311111231   >>    C111123313331323113313331333133313331122112312111113331311331323131111123   <<    C1111233133313231133133313331333133311221123121111133313113313231311111233   >>      C1111233133313231133133313331333133311221123121111133313113313231311111232   >>