Srs & frs

Which one is correct and give reason in detail.

Brs->srs->hld->lld->frs or
brs->srs->frs->hld->lld or
your order

hld : high level document
lld : low level document
srs : software req. Specification
frs : functional requirement specification
brs : business req. Specification.

brs->frs->srs->hld->lld.

From FRS only HLD and LLD, we will prepare. From FRS and HLD, Testers start writing the Testcases(or Scripts). From FRS and HLD, Dev team start writing the code.
HLD is used in the time of Integration.

please give the detail difference betn FRS & SRF with example.