(contextpos
  [
    (ctx_negative) @neg
    (ctx_scan_first) @star
    ((ctx_negative) @neg (ctx_scan_first) @star)
    ((ctx_scan_first) @star (ctx_negative) @neg)
  ]?
  (ctx_number) @root_text
  [
    (ctx_negative) @neg
    (ctx_scan_first) @star
    ((ctx_negative) @neg (ctx_scan_first) @star)
    ((ctx_scan_first) @star (ctx_negative) @neg)
  ]?
)