C213211331333131212111133133313231333132313331322331323133313121332321   >>    C21321133133313121211113313331323133313231333132233132313331312133232   <<    C213211331333131212111133133313231333132313331322331323133313121332323   >>      C213211331333131212111133133313231333132313331322331323133313121332322   >>