C213211331333131212111133133313231333132313331322331323131121211   >>    C21321133133313121211113313331323133313231333132233132313112121   <<    C213211331333131212111133133313231333132313331322331323131121213   >>      C213211331333131212111133133313231333132313331322331323131121212   >>