C312322331333132212111133133313331323132322331333133313211232221   >>    C31232233133313221211113313331333132313232233133313331321123222   <<    C312322331333132212111133133313331323132322331333133313211232223   >>      C312322331333132212111133133313331323132322331333133313211232222   >>