Also, there is another version called 'Tsuruniha OO mushi' (つるニハOOムし): 'tsu' (つ) represents a bald head, 'ru' (る) the ears, 'ni' (ニ) wrinkles on the brow, 'ha' (ハ) the eyebrows, 'OO' the eyes, 'mu' (ム) the nose and the 'shi' (し) syllable forms the outline of the face (there is no mouth) with each of the letters representing a part of an overall caricature of an elderly person's face.
また、「つるニハ○○ムし」（つるにはまるまるむし）というものもあり、「つ」が禿頭、「る」が耳、「ニ」が額のしわ、「ハ」が両眉毛、「○○」が両目、「ム」が鼻、「し」が顔の輪郭をそれぞれ表し（口はない）、全体で老人の顔になる。