$10)$ A commercial office property lease is $$27\mathrm{.}50$ psf per year on a gross basis. Operating expenses $$4\mathrm{.}50$ psf$.$ Real estate taxes are $$3\mathrm{.}75$ psf$.$ No expenses are passed through to the tenant. Assume no inflation. The lease is for $5$ years. The tenant will receive four months free rent at the beginning of the lease. The landlord will also fund a $$10\mathrm{.}00$ psf tenant improvement allowance. What are net cash flows psf for the landlord from this lease for the first $5$ years?