舞鶴草 まいづるそう マイヅルソウ snakeberry (Maianthemum dilatatum); two-leaved Solomon's seal; false lily of the valley n uk Advanced ➥
鶴亀算 つるかめざん obtaining the respective numbers of cranes and tortoises from the total of their heads and legs; calculating the values of two unknown quantities from their unit total and the total of one of their attributes n Advanced ➥