C212212121212113313221323131323131323132322331323132233133112111311   >>    C21221212121211331322132313132313132313232233132313223313311211131   <<    C212212121212113313221323131323131323132322331323132233133112111313   >>      C212212121212113313221323131323131323132322331323132233133112111312   >>