C22212323232133313113313331333132313331323133313333221232211323211   >>    C2221232323213331311331333133313231333132313331333322123221132321   <<    C22212323232133313113313331333132313331323133313333221232211323213   >>      C22212323232133313113313331333132313331323133313333221232211323212   >>