For example, Ogura Hyakunin Isshu (the Ogura Anthology of One Hundred Tanka-poems by One Hundred Poets) used for Karuta competitions includes three poems that start with the letter "い" (i) as follows.
例えば、競技かるたで用いる小倉百人一首には、「い」で始まる首として、次の3つがある。