However, still Ametsuchi no Uta had been used mainly as a pangram until the late Heian period when The Iroha became popular, probably because there had been no appropriate alternatives until then.
しかしながら、他に適当なものがなかったためか、いろは歌が普及する平安後期までは、もっぱら天地の歌が手習い歌として使用されていた。