C312322331333132212111133133313331333133312121111331211111213231221   >>    C31232233133313221211113313331333133313331212111133121111121323122   <<    C312322331333132212111133133313331333133312121111331211111213231223   >>      C312322331333132212111133133313331333133312121111331211111213231222   >>