}
type ST0 struct {
}

func (ST0) si0() {
}

type SI1 interface {
	si1()
}
type ST1 struct {
}

func (ST1) si1() {
}

type SI2 interface {
	si2()
}
type ST2 struct {
}

func (ST2) si2() {
}

type SI3 interface {
	si3()
}
type ST3 struct {
}

func (ST3) si3() {
}

type SI4 interface {
	si4()
}
type ST4 struct {