C312322331333132212111133133313331333133312121111331323211232322221   >>    C31232233133313221211113313331333133313331212111133132321123232222   <<    C312322331333132212111133133313331333133312121111331323211232322223   >>      C312322331333132212111133133313331333133312121111331323211232322222   >>