C313212111133131211331333133313331333133313231333133313331333133313332213231221   >>    C31321211113313121133133313331333133313331323133313331333133313331333221323122   <<    C313212111133131211331333133313331333133313231333133313331333133313332213231223   >>      C313212111133131211331333133313331333133313231333133313331333133313332213231222   >>