/* VSX select */
	{as: AXXSEL, a1: C_VSREG, a2: C_VSREG, a3: C_VSREG, a6: C_VSREG, type_: 91, size: 4}, /* vsx select, xx4-form */

	/* VSX merge */
	{as: AXXMRGHW, a1: C_VSREG, a2: C_VSREG, a6: C_VSREG, type_: 90, size: 4}, /* vsx merge, xx3-form */

	/* VSX splat */
	{as: AXXSPLTW, a1: C_VSREG, a3: C_U15CON, a6: C_VSREG, type_: 89, size: 4}, /* vsx splat, xx2-form */

	{"GMT+", 3, true},
	{"GMT+3", 5, true},
	{"GMT+a", 3, true},
	{"GMT+3a", 5, true},
	{"GMT-5 hi there", 5, true},
	{"GMT-51 hi there", 3, true},
	{"ChST hi there", 4, true},
	{"MeST hi there", 4, true},
	{"MSDx", 3, true},
	{"MSDY", 0, false}, // four letters must end in T.
	{"ESAST hi", 5, true},
	{"ESASTT hi", 0, false}, // run of upper-case letters too long.
	{"ESATY hi", 0, false},  // five letters must end in T.