C11112331312111112111133132313331333132313232112111113232233131   >>    C1111233131211111211113313231333133313231323211211111323223313   <<    C11112331312111112111133132313331333132313232112111113232233133   >>      C11112331312111112111133132313331333132313232112111113232233132   >>