C22121333132313311211113313331333133313232233313331311331322221   >>    C2212133313231331121111331333133313331323223331333131133132222   <<    C22121333132313311211113313331333133313232233313331311331322223   >>      C22121333132313311211113313331333133313232233313331311331322222   >>