C11112331312111112111133133313331333132322321333131133131111331311321   >>    C1111233131211111211113313331333133313232232133313113313111133131132   <<    C11112331312111112111133133313331333132322321333131133131111331311323   >>      C11112331312111112111133133313331333132322321333131133131111331311322   >>