C22121333132313311211113313331333133313331313223313231323132322221   >>    C2212133313231331121111331333133313331333131322331323132313232222   <<    C22121333132313311211113313331333133313331313223313231323132322223   >>      C22121333132313311211113313331333133313331313223313231323132322222   >>