Although Kundoku (reading Chinese texts as Japanese texts) for the 156th poem '巳具耳矣自得見監乍共' includes the following three reading examples, none of these has become an established theory: (1) 'Even we met each other last year, there are many nights when we do not sleep together' (Zenchushaku [a comprehensive commentary]), (2) 'As the figure of the deceased appears in my dream, there are many nights when we do not sleep together' (Shichu [Personal Notes]) and (3) The same meaning as the above (2) (Koten Taikeihon [anthology of classical Japanese literature]).
156番の歌の「巳具耳矣自得見監乍共」の訓読として、「去年（こぞ）のみを我と見えつつ（去年ばかりは私と逢ったが、共に寝ない夜が多い）」（全註釈）「夢にのみ見えつつもとな（亡くなった人の姿が夢にばかり見えて、共に寝なくなった夜が多い）」（私注）「夢にだに見むとすれども（「夢にのみ～」と同じ意味）」（古典大系本）などが挙げられているが、未だ定説をみるには至っていない。