C313212111113331323312111133133313331333133313331333133313233221231   >>    C31321211111333132331211113313331333133313331333133313331323322123   <<    C313212111113331323312111133133313331333133313331333133313233221233   >>      C313212111113331323312111133133313331333133313331333133313233221232   >>