C111123313121111121111331333133313331323231333133313113313232212321132321   >>    C11112331312111112111133133313331333132323133313331311331323221232113232   <<    C111123313121111121111331333133313331323231333133313113313232212321132323   >>      C111123313121111121111331333133313331323231333133313113313232212321132322   >>