, as per wikipedia, "The best-known Japanese haiku is Bashō's "old pond":
古池や蛙飛込む水の音
ふるいけやかわずとびこむみずのおと (transliterated into 17 hiragana)

This separates into syllables (on) as:

fu-ru-i-ke ya (5)
ka-wa-zu to-bi-ko-mu (7)
mi-zu no o-to (5)
Translated:

old pond . . .
a frog leaps in
water’s sound