C212212121212113313221323131323132313132322331323132233132313331333112111111   >>    C21221212121211331322132313132313231313232233132313223313231333133311211111   <<    C212212121212113313221323131323132313132322331323132233132313331333112111113   >>      C212212121212113313221323131323132313132322331323132233132313331333112111112   >>