C312322331333132212111133133313331323133313221211331333132322312121   >>    C31232233133313221211113313331333132313331322121133133313232231212   <<    C312322331333132212111133133313331323133313221211331333132322312123   >>      C312322331333132212111133133313331323133313221211331333132322312122   >>