C212212121212113313221323131323132313132322331323222313231321111   >>    C21221212121211331322132313132313231313232233132322231323132111   <<    C212212121212113313221323131323132313132322331323222313231321113   >>      C212212121212113313221323131323132313132322331323222313231321112   >>