C1111233131211111211113313331333133313232212111133131133133313231312131   >>    C111123313121111121111331333133313331323221211113313113313331323131213   <<    C1111233131211111211113313331333133313232212111133131133133313231312133   >>      C1111233131211111211113313331333133313232212111133131133133313231312132   >>