     this.$tokens = $(tokensQuery)
     this.tokens = []
     this.selectedTokenIndex = -1
-    this.knownKeys = [8, 9, 16, 37, 39, 49, 50]
+    this.knownKeys = [8, 9, 16, 37, 39, 49, 50, 106, 107]
     this.keyMap = []
 
     # iterate over all tokens and save them in an array

          }

          tokenId = $token.data('token-id')
          if tokenId && _this.tokenSkipCount == 0
            _this.setCurrentAnnotationLength(tokenId)
            _this.tokenSkipCount = _this.currentAnnotationLength


      _this.addTokenToChunk('left') if keyIsPressed(37) # key '<-'
      _this.addTokenToChunk('right') if keyIsPressed(39) # key '->'
      _this.selectNextChunk('right') if keyIsPressed(9) # key 'tab'
      _this.saveAnnotation() if keyIsPressed(106) # key 'J'
      _this.skip() if keyIsPressed(107) # key 'K'

  addTokenToChunk: (side) ->
    mostOuterTokenListIndex = this.getMostOuterTokenIndexFromChunk(this.selectedTokenIndex, side)
