C22212323232133313113313331333132313331323132322113331333231321   >>    C2221232323213331311331333133313231333132313232211333133323132   <<    C22212323232133313113313331333132313331323132322113331333231323   >>      C22212323232133313113313331333132313331323132322113331333231322   >>