tetrachloroethene + AH2 => trichloroethene + chloride + A + H(+)
tetrachloroethene + ah2 => trichloroethene + chloride + a + h(+)
tetrachloroethene + AH2 => trichloroethene + chloride + A + H(+)
tetrachloroethene + ah2 => trichloroethene + chloride + a + h(+)