YOU SAID:

when flies fly behind flies flies fly behind flies

INTO JAPANESE

ハエがハエの後ろを飛ぶときハエはハエの後ろを飛ぶ

BACK INTO ENGLISH

When a fly flies behind a fly, a fly flies behind a fly

INTO JAPANESE

ハエがハエの後ろを飛ぶとき、ハエはハエの後ろを飛ぶ

BACK INTO ENGLISH

When a fly flies behind a fly, the fly flies behind the fly

INTO JAPANESE

ハエがハエの後ろを飛ぶとき、ハエはハエの後ろを飛ぶ

BACK INTO ENGLISH

When a fly flies behind a fly, the fly flies behind the fly