C22212323232133313113313331333132313331323132322113331221312321   >>    C2221232323213331311331333133313231333132313232211333122131232   <<    C22212323232133313113313331333132313331323132322113331221312323   >>      C22212323232133313113313331333132313331323132322113331221312322   >>