C111113331333132322331333133313331333132332313311211113313121311   >>    C11111333133313232233133313331333133313233231331121111331312131   <<    C111113331333132322331333133313331333132332313311211113313121313   >>      C111113331333132322331333133313331333132332313311211113313121312   >>