Prime p₀= 991423074537451349 starts a Symmetric tuple of 12 consecutive primes, which form 6 twin primes (STPT).
d_n: 0 2 118 2 16 2 22 2 16 2 118 2 (?)
a_n: 0 2 120 122 138 140 162 164 180 182 300 302
All 12 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 302
Found by: [AF>Libristes] Elorak
db: batch=76, k=12, 2 118 2 16 2 22

SPT(16)	991422418528555997	0 32 44 60 84 96 110 146 180 216 230 242 266 282 294 326	-656008895352
TPT(14)	991422558914809079	0 2 42 44 48 50 60 62 132 134 198 200 210 212	-515622642270
SPT(16)	991422794372204309	0 8 24 42 48 78 104 150 152 198 224 254 260 278 294 302	-280165247040
SPT(16)	991422937428318803	0 30 36 44 48 50 104 126 128 150 204 206 210 218 224 254	-137109132546
TPT(14)	991422987286505789	0 2 72 74 168 170 222 224 240 242 318 320 498 500	-87250945560
STPT(10)	991423057667132939	0 2 30 32 60 62 90 92 120 122	-16870318410
STPT(10)	991423383991578677	0 2 42 44 72 74 102 104 144 146	309454127328
SPT(16)	991423435745221571	0 2 50 56 78 80 96 138 140 182 198 200 222 228 276 278	361207770222
SPT(16)	991423630165689221	0 8 18 30 102 140 168 198 230 260 288 326 398 410 420 428	555628237872
STPT(10)	991423820013001787	0 2 24 26 42 44 60 62 84 86	745475550438
SPT(16)	991423920401380993	0 4 16 48 88 126 130 148 156 174 178 216 256 288 300 304	845863929644