C11112331312111112111133132313331333133313233313331323131132211   >>    C1111233131211111211113313231333133313331323331333132313113221   <<    C11112331312111112111133132313331333133313233313331323131132213   >>      C11112331312111112111133132313331333133313233313331323131132212   >>