Prime p₀= 2015534538017730881 starts a Symmetric tuple of 12 consecutive primes, which form 6 twin primes (STPT).
d_n: 0 2 46 2 40 2 124 2 40 2 46 2 (?)
a_n: 0 2 48 50 90 92 216 218 258 260 306 308
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: 308
Found by: LeChat51X
db: batch=80, k=12, 2 46 2 40 2 124

SPT(16)	2015532401704468033	0 18 30 48 58 60 90 100 204 214 244 246 256 274 286 304	-2136313262848
SPT(16)	2015532617068061719	0 40 42 52 60 88 102 108 124 130 144 172 180 190 192 232	-1920949669162
SPT(16)	2015532960324316859	0 24 30 104 114 144 158 188 210 240 254 284 294 368 374 398	-1577693414022
STPT(10)	2015533790242198319	0 2 18 20 30 32 42 44 60 62	-747775532562
SPT(16)	2015533826923110127	0 34 40 90 96 102 124 126 130 132 154 160 166 216 222 256	-711094620754
STPT(10)	2015534401276821587	0 2 30 32 42 44 54 56 84 86	-136740909294
SPT(16)	2015534809358167961	0 12 36 50 56 80 90 96 122 128 138 162 168 182 206 218	271340437080
STPT(10)	2015534837957110427	0 2 24 26 42 44 60 62 84 86	299939379546
STPT(10)	2015535385537824089	0 2 42 44 60 62 78 80 120 122	847520093208
SPT(16)	2015535416430666863	0 20 24 50 54 78 110 116 168 174 206 230 234 260 264 284	878412935982
STPT(10)	2015535447077458847	0 2 72 74 102 104 132 134 204 206	909059727966