L-valine(out) + L-phenylalanine(in) => L-valine(in) + L-phenylalanine(out)
l-valine(out) + l-phenylalanine(in) => l-valine(in) + l-phenylalanine(out)
L-valine(out) + L-phenylalanine(in) => L-valine(in) + L-phenylalanine(out)
l-valine(out) + l-phenylalanine(in) => l-valine(in) + l-phenylalanine(out)