C312312111133131212111133133313231333133313331333131211111223322131   >>    C31231211113313121211113313331323133313331333133313121111122332213   <<    C312312111133131212111133133313231333133313331333131211111223322133   >>      C312312111133131212111133133313231333133313331333131211111223322132   >>