how many ss have won the mvp award twice

Shortstops won the MVP award once in 1944.

Interpreted as:

How many ss have won the mvp award in a regular season twice?

	POSITION	MVP	SEASON	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Shortstop	1	1944	2,550	8,487	935	2,086	368	53	55	807	709	36	755	98		9,426	2,725	476	194			189	.246	.307	.321	.628	850	-169.5	.301	78	-236.7
2	Shortstop	1	1948	2,692	8,997	1,187	2,366	379	74	125	1,020	979	24	807	99		10,136	3,268	578	136			194	.263	.337	.363	.700	1126	-72.4	.332	88	-156.6
3	Shortstop	1	1950	2,819	9,623	1,317	2,533	400	89	162	1,121	1,069	38	903	92		10,899	3,597	651	169			252	.263	.339	.374	.713	1237	-120.1	.333	85	-215.2
4	Shortstop	1	1958	2,915	9,018	1,060	2,215	349	65	160	864	731	42	1,126	95	56	9,997	3,174	574	138	68	54	226	.246	.303	.352	.655	916	-207.9	.293	75	-292.3
5	Shortstop	1	1959	3,130	9,254	1,174	2,345	364	61	193	915	876	45	1,284	110	58	10,358	3,410	618	123	60	91	222	.253	.319	.368	.688	1093	-94.1	.307	86	-178.7
6	Shortstop	1	1960	3,043	9,234	1,130	2,341	331	79	179	953	880	55	1,160	147	53	10,365	3,367	589	135	61	113	232	.254	.320	.365	.685	1074	-92.5	.307	86	-174.3
7	Shortstop	1	1962	3,867	12,411	1,552	3,178	482	85	198	1,174	1,148	67	1,738	277	115	13,875	4,424	765	159	90	79	298	.256	.320	.356	.677	1434	-176.9	.305	84	-285.3
8	Shortstop	1	1965	3,943	12,663	1,388	3,079	456	123	160	1,024	1,080	73	1,795	285	136	14,066	4,261	739	169	81	119	251	.243	.305	.336	.641	1305	-179.1	.287	82	-292.4
9	Shortstop	1	1982	4,977	15,374	1,771	3,870	653	118	207	1,535	1,173	49	1,867	349	171	16,991	5,380	978	266	129	122	350	.252	.304	.350	.654	1580	-330.3	.293	80	-384.4
10	Shortstop	1	1983	5,183	16,210	1,996	4,156	689	119	195	1,563	1,328	57	1,983	467	221	17,982	5,668	1,003	256	131	120	315	.256	.313	.350	.662	1742	-292.2	.298	83	-352.3
11	Shortstop	1	1991	5,170	15,174	1,760	3,819	641	109	198	1,456	1,225	67	2,251	309	169	16,858	5,272	948	272	120	97	311	.252	.308	.347	.656	1618	-284	.296	83	-330.4
12	Shortstop	1	1995	4,833	15,633	2,110	4,008	778	108	291	1,701	1,412	147	2,671	335	149	17,526	5,875	1,177	217	117	96	342	.256	.322	.376	.697	1861	-326.5	.311	83	-394.2
13	Shortstop	1	2002	5,365	18,494	2,528	4,898	948	135	406	2,095	1,413	200	2,990	409	193	20,463	7,334	1,489	196	160	111	412	.265	.321	.397	.718	2255	-202.9	.314	89	-286.5
14	Shortstop	1	2003	5,580	19,127	2,647	5,036	961	147	438	2,156	1,518	190	3,169	395	144	21,202	7,605	1,546	217	150	109	391	.263	.321	.398	.719	2350	-249.6	.314	87	-341.3
15	Shortstop	1	2007	5,811	20,028	2,831	5,510	1,064	134	437	2,260	1,565	173	3,015	523	175	22,085	8,153	1,635	180	139	101	447	.275	.331	.407	.738	2596	-136.1	.324	92	-225.5