C313212111113331323312111133133313331333133313331333133313113313231333132212221   >>    C31321211111333132331211113313331333133313331333133313331311331323133313221222   <<    C313212111113331323312111133133313331333133313331333133313113313231333132212223   >>      C313212111113331323312111133133313331333133313331333133313113313231333132212222   >>