C212212121212113313221323131323133313132333132322132322331313232211   >>    C21221212121211331322132313132313331313233313232213232233131323221   <<    C212212121212113313221323131323133313132333132322132322331313232213   >>      C212212121212113313221323131323133313132333132322132322331313232212   >>