when were the last two times when a nba player had three 20 rebound playoff games in a single playoff series

Dave DeBusschere grabbed 140 boards in the playoffs when playing 3+ games.

Interpreted as:

When were the last two times when a NBA player had three 20 or more rebound playoff games in a single playoff series?

	NAME	REB	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	AST	STL	BLK	TOV	PF	+/-
1	Dave DeBusschere D. DeBusschere	140	6	46.8	23.8	23.3	2.8			9.0	21.2	42.5				5.8	9.0	64.8	47.4				281	143	17				21
2	Bob Pettit B. Pettit	84	4	44.3	29.0	21.0	2.8			11.0	24.0	45.8				7.0	10.8	65.1	50.5				177	116	11				19
3	Bill Russell B. Russell	1,919	74		15.7	25.9	5.4			5.9	13.6	43.1				4.0	6.9	57.5	47.2					1,159	403				252
4	Elgin Baylor E. Baylor	126	6		33.0	21.0	3.7			12.7	27.2	46.6				7.7	10.2	75.4	52.1					198	22				23
5	Jerry Lucas J. Lucas	241	10		19.0	24.1	3.6			7.6	17.1	44.4				3.8	5.4	70.4	48.8					190	36				34
6	Wilt Chamberlain W. Chamberlain	2,772	104	47.7	21.6	26.7	4.4			8.6	15.9	54.1				4.5	10.4	43.1	53.0				4,959	2,249	462				271
7	Walt Bellamy W. Bellamy	166	8		20.4	20.8	3.3			7.1	15.6	45.6				6.1	9.0	68.1	52.0					163	26				30
8	Bill Bridges B. Bridges	311	13		17.4	23.9	3.3			6.5	15.6	41.9				4.3	6.8	62.9	46.7					226	43				56
9	Nate Thurmond N. Thurmond	457	19		17.3	24.1	3.8			6.8	16.6	41.3				3.6	6.0	59.6	44.9					328	72				63
10	Willis Reed W. Reed	123	5	45.2	31.2	24.6	3.2			12.8	25.6	50.0				5.6	6.4	87.5	54.9				226	156	16				19
11	Darrall Imhoff D. Imhoff	61	3	38.7	14.0	20.3	4.0			5.7	11.3	50.0				2.7	4.7	57.1	52.3				116	42	12				14
12	Wes Unseld W. Unseld	558	24	43.3	14.8	23.3	3.8			6.0	12.6	48.0				2.8	4.2	65.3	51.4			1.5	1,040	356	91			3	65
13	Elvin Hayes E. Hayes	172	8		25.8	21.5	2.3			10.8	21.9	49.1				4.3	6.8	63.0	51.8			2.3		206	18			9	31
14	Kareem Abdul-Jabbar K. Abdul-Jabbar	498	22	45.9	31.9	22.6	4.2	2.0	3.7	13.3	26.1	51.0				5.3	7.3	72.5	54.5				1,010	702	92	14	26		70
15	Paul Silas P. Silas	154	7	45.0	10.9	22.0	2.9			4.1	12.4	33.3				2.6	3.9	66.7	38.4				315	76	20				24
16	Dave Cowens D. Cowens	289	13	46.3	23.3	22.2	4.2			10.2	21.4	47.5				3.0	3.8	78.0	50.5				602	303	54				53
17	Bob McAdoo B. McAdoo	84	4	46.8	35.8	21.0	2.3			13.5	26.3	51.4				8.8	11.5	76.1	57.1				187	143	9				13
18	Moses Malone M. Malone	231	10	45.2	30.0	23.1	1.6	1.0	1.6	11.8	24.6	48.0	0.0	0.2	0.0	6.4	9.5	67.4	52.1				452	300	16	10	16		29
19	Bill Walton B. Walton	67	3	41.3	20.7	22.3	4.3	0.7	4.0	8.3	14.3	58.1				4.0	4.7	85.7	63.1	3.3	19.0		124	62	13	2	12		11
20	Larry Bird L. Bird	104	5	45.4	21.6	20.8	5.2	2.8	0.2	8.6	19.8	43.4	0.8	1.8	44.4	3.6	3.8	94.7	50.3	5.2	15.6	3.6	227	108	26	14	1	18	14
21	Charles Barkley C. Barkley	336	16	42.8	26.6	21.0	4.1	1.9	0.9	9.8	19.9	49.2	0.4	2.1	18.2	6.6	10.0	66.3	54.7	7.9	13.1	3.9	684	426	66	30	15	63	56	+1
22	Hakeem Olajuwon H. Olajuwon	72	3	47.3	40.3	24.0	2.3	2.7	5.7	16.0	29.0	55.2	0.0	0.0		8.3	10.0	83.3	60.4	9.0	15.0	2.7	142	121	7	8	17	8	10
23	Charles Oakley C. Oakley	104	5	42.0	14.4	20.8	3.2	1.0	0.0	5.4	10.2	52.9	0.0	0.0		3.6	4.4	81.8	59.3	7.8	13.0	3.2	210	72	16	5	0	16	15
24	Karl Malone K. Malone	63	3	45.0	33.0	21.0	2.0	1.3	1.3	11.3	25.0	45.3	0.0	0.3	0.0	10.3	12.7	81.6	54.0	6.7	14.3	2.7	135	99	6	4	4	8	12	+7
25	Dennis Rodman D. Rodman	164	8	38.6	12.3	20.5	1.3	0.6	0.3	5.1	9.6	53.2	0.0	0.3	0.0	2.0	3.0	66.7	56.0	8.3	12.3	2.5	309	98	10	5	2	20	34	+2