C312322331333132212111133133313331333133112112312111133132232211   >>    C31232233133313221211113313331333133313311211231211113313223221   <<    C312322331333132212111133133313331333133112112312111133132232213   >>      C312322331333132212111133133313331333133112112312111133132232212   >>