C312322331333132212111133133313331323133313221211111333121333121   >>    C31232233133313221211113313331333132313331322121111133312133312   <<    C312322331333132212111133133313331323133313221211111333121333123   >>      C312322331333132212111133133313331323133313221211111333121333122   >>