dvrand 1, 2, 3, 4
	dvrand 1, 2, 4, 3
	dvrand 1, 3, 2, 4
	dvrand 1, 3, 4, 2
	dvrand 1, 4, 2, 3
	dvrand 1, 4, 3, 2
	dvrand 2, 1, 3, 4
	dvrand 2, 1, 4, 3
	dvrand 2, 3, 1, 4
	dvrand 2, 3, 4, 1
	dvrand 2, 4, 1, 3
	dvrand 2, 4, 3, 1
	dvrand 3, 1, 2, 4
	dvrand 3, 1, 4, 2
	dvrand 3, 2, 1, 4
	dvrand 3, 2, 4, 1
	dvrand 3, 4, 1, 2
	dvrand 3, 4, 2, 1
	dvrand 4, 1, 2, 3
	dvrand 4, 1, 3, 2
	dvrand 4, 2, 1, 3
	dvrand 4, 2, 3, 1
	dvrand 4, 3, 1, 2
	dvrand 4, 3, 2, 1