C213211331333131212111133133313231333132313331322331323132311112331   >>    C21321133133313121211113313331323133313231333132233132313231111233   <<    C213211331333131212111133133313231333132313331322331323132311112333   >>      C213211331333131212111133133313231333132313331322331323132311112332   >>