C212212121212113313221323131323131323132322331323132233132313232223112331   >>    C21221212121211331322132313132313132313232233132313223313231323222311233   <<    C212212121212113313221323131323131323132322331323132233132313232223112333   >>      C212212121212113313221323131323131323132322331323132233132313232223112332   >>