C222123232321333131133133313331323133313231333133323311322232221111   >>    C22212323232133313113313331333132313331323133313332331132223222111   <<    C222123232321333131133133313331323133313231333133323311322232221113   >>      C222123232321333131133133313331323133313231333133323311322232221112   >>