C212212121212113313221323131323131323132322331323132233132211111   >>    C21221212121211331322132313132313132313232233132313223313221111   <<    C212212121212113313221323131323131323132322331323132233132211113   >>      C212212121212113313221323131323131323132322331323132233132211112   >>