C22213331333133313112331323133313331333133313231122213232212211   >>    C2221333133313331311233132313331333133313331323112221323221221   <<    C22213331333133313112331323133313331333133313231122213232212213   >>      C22213331333133313112331323133313331333133313231122213232212212   >>