C212212121212113313221323131323132313132322331323132233132312312331   >>    C21221212121211331322132313132313231313232233132313223313231231233   <<    C212212121212113313221323131323132313132322331323132233132312312333   >>      C212212121212113313221323131323132313132322331323132233132312312332   >>