0 middle main-window-combobox-row main-window-append-row-button main-window-insert-row-button main-window-replace-row-button main-window-delete-row-button main-window-reset-button main-window-shuffle-button combobox-label combobox-element 2 append-row-button 2 insert-row-button 2 replace-row-button 2 delete-row-button 2 reset-button 2 shuffle-button