C11112331312111112111133133313231333132313331333132211211322121   >>    C1111233131211111211113313331323133313231333133313221121132212   <<    C11112331312111112111133133313231333132313331333132211211322123   >>      C11112331312111112111133133313231333132313331333132211211322122   >>