Pure-breeding lines of corn

Two different pure-breeding lines of corn were obtained with a tester that was homozygous recessive for the three genes. The parentals shrivelled (sh/ sh . br⁺/ br⁺. f⁺/ f⁺) and brown and fine (sh ⁺/ sh ⁺.  br / br  . f/f ) were crossed. The F₁ was wildtype. The F₁ was testcrossed (sh/sh . br/ br. f/ f) and the following F₂ progeny was obtained: 3601 shrivelled; 3713 brown and fine; 1021 brown; 865 fine and shrivelled; 453 shrivelled and brown; 333 fine; 6 wildtype; 8 shrivelled, brown and fine.

 Write out the full genetic cross including genotypes and phenotypes of the P, F₁ and F₂ generations using correct genetic nomenclature (eg. linked/unlinked, gene order).