syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"x28:"}]}
source_snippet:         x28: reg = ["x28", "t3"] % not_e,
context_before:         x27: reg = ["x27", "s11"] % not_e,
context_after:         x29: reg = ["x29", "t4"] % not_e,