C212212121212113313221323131323131323132322331323132233131323331323131121211   >>    C21221212121211331322132313132313132313232233132313223313132333132313112121   <<    C212212121212113313221323131323131323132322331323132233131323331323131121213   >>      C212212121212113313221323131323131323132322331323132233131323331323131121212   >>