C213211331333131212111133133313231333132313331322331323133313121333131   >>    C21321133133313121211113313331323133313231333132233132313331312133313   <<    C213211331333131212111133133313231333132313331322331323133313121333133   >>      C213211331333131212111133133313231333132313331322331323133313121333132   >>