C313212111133131211331333133313331333133313231333133313331323133313331311223211   >>    C31321211113313121133133313331333133313331323133313331333132313331333131122321   <<    C313212111133131211331333133313331333133313231333133313331323133313331311223213   >>      C313212111133131211331333133313331333133313231333133313331323133313331311223212   >>