Is this design and naming of the form correct in BEM?

Question

css

<form class="form form_flowers">

        <div class="form__group">
            <div class="label-group">
                <label class="label-group__label" for="test">Текст</label>
            </div>
            <div class="input-group">
                <input class="input-group__input" type="text" id="test">
                <span class="input-group__addon">
                    @
                </span>
            </div>
        </div>

    </form>

I create a template to use to create a form with fields:

• Plain
  
• Horizontal
  
• input with button
  
• input with icon
  
• Button group
  

Answer 1

WHO is their parent, i.e. parent block???

class="label-group
class="input-group

You have lost your Block.)))

Answer 2

In my opinion, everything is correct.