C11112331312111112111133133313331333132212111113331323133313131211   >>    C1111233131211111211113313331333133313221211111333132313331313121   <<    C11112331312111112111133133313331333132212111113331323133313131213   >>      C11112331312111112111133133313331333132212111113331323133313131212   >>