C3132121111133313233121111331333133313331322331333131133132213231   >>    C313212111113331323312111133133313331333132233133313113313221323   <<    C3132121111133313233121111331333133313331322331333131133132213233   >>      C3132121111133313233121111331333133313331322331333131133132213232   >>