how many times has a player came off the bench and had a 20 point 20 rebound game

LaSalle Thompson played in 2 games off the bench with 20+ points and 20+ rebounds.

Interpreted as:

How many times in the regular season has a player came off the bench and had a 20 or more point 20 or more rebound game?

	NAME	GP	PTS	REB	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	AST	STL	BLK	TOV	PF	+/-
1	LaSalle Thompson L. Thompson	2	51	40	31.5	25.5	20.0	0.5	1.0	1.0	9.5	13.5	70.4	0.0	0.0		6.5	7.5	86.7	75.9	10.5	9.5	1.0	63	1	2	2	2	6
2	Charles Barkley C. Barkley	1	31	21	43.0	31.0	21.0	9.0	1.0	7.0	11.0	18.0	61.1	0.0	0.0		9.0	11.0	81.8	67.9	9.0	12.0	7.0	43	9	1	7	7	5
3	Cliff Robinson C. Robinson	1	22	20	41.0	22.0	20.0	1.0	0.0	2.0	8.0	18.0	44.4	0.0	0.0		6.0	6.0	100.0	53.3	6.0	14.0	3.0	41	1	0	2	3	5
4	Roy Tarpley R. Tarpley	1	27	23	38.0	27.0	23.0	1.0	0.0	2.0	10.0	17.0	58.8	0.0	0.0		7.0	10.0	70.0	63.1	9.0	14.0	3.0	38	1	0	2	3	3
5	Shawn Kemp S. Kemp	1	22	21	31.0	22.0	21.0	2.0	2.0	4.0	10.0	23.0	43.5	0.0	0.0		2.0	5.0	40.0	43.7	9.0	12.0	0.0	31	2	2	4	0	4
6	Detlef Schrempf D. Schrempf	1	26	23	35.0	26.0	23.0	3.0	2.0	0.0	9.0	17.0	52.9	0.0	0.0		8.0	9.0	88.9	62.0	8.0	15.0	2.0	35	3	2	0	2	4
7	Ed Pinckney E. Pinckney	1	21	22	42.0	21.0	22.0	2.0	4.0	1.0	6.0	10.0	60.0	0.0	0.0		9.0	12.0	75.0	68.7	9.0	13.0	2.0	42	2	4	1	2	2
8	Chris Gatling C. Gatling	1	23	20	35.0	23.0	20.0	0.0	0.0	1.0	10.0	18.0	55.6	0.0	1.0	0.0	3.0	6.0	50.0	55.7	6.0	14.0	6.0	35	0	0	1	6	4	+11
9	Jayson Williams J. Williams	1	21	20	31.0	21.0	20.0	4.0	0.0	0.0	10.0	20.0	50.0	0.0	0.0		1.0	3.0	33.3	49.2	10.0	10.0	1.0	31	4	0	0	1	6	+1
10	Shawn Bradley S. Bradley	1	22	22	38.0	22.0	22.0	0.0	1.0	13.0	6.0	15.0	40.0	0.0	0.0		10.0	10.0	100.0	56.7	5.0	17.0	2.0	38	0	1	13	2	3	+17
11	Kevin Love K. Love	1	23	22	31.8	23.0	22.0	2.0	1.0	2.0	8.0	17.0	47.1	1.0	4.0	25.0	6.0	6.0	100.0	58.6	8.0	14.0	2.0	32	2	1	2	2	3	+4
12	Hassan Whiteside H. Whiteside	1	25	23	29.3	25.0	23.0	0.0	0.0	2.0	11.0	15.0	73.3	0.0	0.0		3.0	7.0	42.9	69.1	8.0	15.0	1.0	29	0	0	2	1	3	+8
13	Enes Kanter Freedom E. Kanter Freedom	1	23	24	41.0	23.0	24.0	7.0	1.0	0.0	8.0	14.0	57.1	0.0	1.0	0.0	7.0	8.0	87.5	65.6	9.0	15.0	4.0	41	7	1	0	4	2	+7
14	Alize Johnson A. Johnson	1	20	21	32.2	20.0	21.0	3.0	0.0	2.0	7.0	12.0	58.3	0.0	1.0	0.0	6.0	6.0	100.0	68.3	4.0	17.0	0.0	32	3	0	2	0	2	+7
15	Adama Sanogo A. Sanogo	1	22	20	35.1	22.0	20.0	0.0	1.0	0.0	8.0	18.0	44.4	0.0	0.0		6.0	9.0	66.7	50.1	10.0	10.0	2.0	35	0	1	0	2	5	+11
16	Onyeka Okongwu O. Okongwu	1	22	21	28.2	22.0	21.0	1.0	1.0	0.0	9.0	14.0	64.3	0.0	0.0		4.0	5.0	80.0	67.9	10.0	11.0	1.0	28	1	1	0	1	0	+12