C221213331323133112111133133313331333133313132233132313231323221221   >>    C22121333132313311211113313331333133313331313223313231323132322122   <<    C221213331323133112111133133313331333133313132233132313231323221223   >>      C221213331323133112111133133313331333133313132233132313231323221222   >>