C222123232321333131133133313331323133313231333133323311322232221321   >>    C22212323232133313113313331333132313331323133313332331132223222132   <<    C222123232321333131133133313331323133313231333133323311322232221323   >>      C222123232321333131133133313331323133313231333133323311322232221322   >>