C111112111133131121133133313331333133313331311113313231333132321   >>    C11111211113313112113313331333133313331333131111331323133313232   <<    C111112111133131121133133313331333133313331311113313231333132323   >>      C111112111133131121133133313331333133313331311113313231333132322   >>