[
  [
    { "type": "placeholder" },
    { "label": "delete", "width": 0.1 }
  ],
  [
    { "type": "placeholder" }
  ],
  [
    { "type": "placeholder" },
    { "label": "action", "width": 0.1 }
  ],
  [
    { "label": "shift", "width": 0.1 },
    { "type": "placeholder" },
    { "label": "shift" }
  ],
  [
    { "label": "symbol_alpha" },
    { "$": "variation_selector",
      "default":  { "label": "comma" },
      "email":    { "label": "@", "groupId": 1, "type": "function" },
      "uri":      { "label": "/", "groupId": 1, "type": "function" }
    },
    { "$": "keyboard_state_selector", "languageKeyEnabled": { "$": "keyboard_state_selector", "alphabet": { "label": "language_switch" }}},
    { "$": "keyboard_state_selector", "emojiKeyEnabled": { "$": "keyboard_state_selector", "alphabet": { "label": "emoji" }}},
    { "$": "keyboard_state_selector", "symbols": { "label": "numpad" }},
    { "label": "space" },
    { "label": "period" },
    { "$": "variation_selector",
      "default":  { "label": "emoji" },
      "email":    { "label": "com" },
      "uri":      { "label": "com" }
    }
  ]
]
