C221213331323133112111133133313331333133313132233132313231312121   >>    C22121333132313311211113313331333133313331313223313231323131212   <<    C221213331323133112111133133313331333133313132233132313231312123   >>      C221213331323133112111133133313331333133313132233132313231312122   >>