C213211331333131212111133133313231333132313331322331323133313231322233311   >>    C21321133133313121211113313331323133313231333132233132313331323132223331   <<    C213211331333131212111133133313231333132313331322331323133313231322233313   >>      C213211331333131212111133133313231333132313331322331323133313231322233312   >>