C213211331333131212111133133313231333132313331322331323133313233311312231   >>    C21321133133313121211113313331323133313231333132233132313331323331131223   <<    C213211331333131212111133133313231333132313331322331323133313233311312233   >>      C213211331333131212111133133313231333132313331322331323133313233311312232   >>