C312322331333132212111133133313331323132322331333133321123231221   >>    C31232233133313221211113313331333132313232233133313332112323122   <<    C312322331333132212111133133313331323132322331333133321123231223   >>      C312322331333132212111133133313331323132322331333133321123231222   >>