C11112331312111112111133132313331333133313233313331323221321231   >>    C1111233131211111211113313231333133313331323331333132322132123   <<    C11112331312111112111133132313331333133313233313331323221321233   >>      C11112331312111112111133132313331333133313233313331323221321232   >>