C213211331333131212111133133313231333131131211113313331323132233313331123221   >>    C21321133133313121211113313331323133313113121111331333132313223331333112322   <<    C213211331333131212111133133313231333131131211113313331323132233313331123223   >>      C213211331333131212111133133313231333131131211113313331323132233313331123222   >>