st0 st1
xmm1 xmm2
ymm1 ymm2
zmm1 zmm2
cr1 dr1 tr1
r1 r42
r1b r1w r1d
ax bx cx dx
eax ebx ecx edx
rax rbx rcx rdx
ah bh ch dh
al bl cl dl
bp sp si di
ebp esp esi edi
rbp rsp rsi rdi
cs ds es
fs gs ss

----------------------------------------------------

[
	["register", "st0"], ["register", "st1"],
	["register", "xmm1"], ["register", "xmm2"],
	["register", "ymm1"], ["register", "ymm2"],
	["register", "zmm1"], ["register", "zmm2"],
	["register", "cr1"], ["register", "dr1"], ["register", "tr1"],
	["register", "r1"], ["register", "r42"],
	["register", "r1b"], ["register", "r1w"], ["register", "r1d"],
	["register", "ax"], ["register", "bx"], ["register", "cx"], ["register", "dx"],
	["register", "eax"], ["register", "ebx"], ["register", "ecx"], ["register", "edx"],
	["register", "rax"], ["register", "rbx"], ["register", "rcx"], ["register", "rdx"],
	["register", "ah"], ["register", "bh"], ["register", "ch"], ["register", "dh"],
	["register", "al"], ["register", "bl"], ["register", "cl"], ["register", "dl"],
	["register", "bp"], ["register", "sp"], ["register", "si"], ["register", "di"],
	["register", "ebp"], ["register", "esp"], ["register", "esi"], ["register", "edi"],
	["register", "rbp"], ["register", "rsp"], ["register", "rsi"], ["register", "rdi"],
	["register", "cs"], ["register", "ds"], ["register", "es"],
	["register", "fs"], ["register", "gs"], ["register", "ss"]
]

----------------------------------------------------

Checks for registers.