C22212323232133313113313331333132313331323132313331132231313222321   >>    C2221232323213331311331333133313231333132313231333113223131322232   <<    C22212323232133313113313331333132313331323132313331132231313222323   >>      C22212323232133313113313331333132313331323132313331132231313222322   >>