C1111233133313231133133313331333133313231312111133133313232233223331   >>    C111123313331323113313331333133313331323131211113313331323223322333   <<    C1111233133313231133133313331333133313231312111133133313232233223333   >>      C1111233133313231133133313331333133313231312111133133313232233223332   >>