Alexa does not recognize some of the slot values ​​that depend on sample statements

I created an Amazon Alexa skill that has one intent (MyIntent) and two custom slots (SlotA and SlotB). The intent scheme looks like this:

{
  "intents": [
    {
      "intent": "Foo",
      "slots": [
        {
          "name": "CustomA",
          "type": "CUSTOM_A"
        },
        {
          "name": "CustomB",
          "type": "CUSTOM_B"
        }
      ]
    }
  ]
}

      

        
        
        
      

    

Each slot has a pair of values, for example SlotA with

865985
710000
927291
514000

      

        
        
        
      

    

and SlotB with

Photo
Car
Bed
Kitchen

      

        
        
        
      

    

My example statements look like this:

MyIntent foo bar {SlotA}
MyIntent bar baz {SlotB}
MyIntent {SlotA}
MyIntent {SlotB}

      

        
        
        
      

    

The problem is that Alexa does not recognize some of my slot values ​​like "bed" but recognizes others as "kitchen". This applies to both types of slots.

Interestingly, all meanings are recognized if I keep only simple example statements and remove those that include phrases, and my example statements look like this:

MyIntent {SlotA}
MyIntent {SlotB}

      

        
        
        
      

    

The order of meanings or sample statements does not matter. I've tried every combination. Also, the presence of two slots (combining all the values ​​of the slots in one) does not make any difference.

Why do sample sentences with phrases block recognition of some slot values?

EDIT:

By "not recognizing" I mean that user input is not displayed in MyIntent. While I'm in the dialog (session), I just get the SessionEndedRequest.