C22213331333133313112331323133313331333133313233211111133132211211312121   >>    C2221333133313331311233132313331333133313331323321111113313221121131212   <<    C22213331333133313112331323133313331333133313233211111133132211211312123   >>      C22213331333133313112331323133313331333133313233211111133132211211312122   >>