C313212111113331323312111133133313331333133313331333133313113313211232221   >>    C31321211111333132331211113313331333133313331333133313331311331321123222   <<    C313212111113331323312111133133313331333133313331333133313113313211232223   >>      C313212111113331323312111133133313331333133313331333133313113313211232222   >>