"puter":    0x48,
	"rigik":    0x49,
	"rozaj":    0x4a,
	"rumgr":    0x4b,
	"scotland": 0x4c,
	"scouse":   0x4d,
	"simple":   0x6f,
	"solba":    0x66,
	"sotav":    0x4e,
	"spanglis": 0x4f,
	"surmiran": 0x50,
	"sursilv":  0x51,
	"sutsilv":  0x52,
	"synnejyl": 0x53,
	"tarask":   0x54,
	"tongyong": 0x55,
	"tunumiit": 0x56,
	"uccor":    0x57,
	"ucrcor":   0x58,

	var prev span
	for _, s := range parseSpans(lines) {
		var b Block
		switch s.kind {
		default:
			panic("go/doc/comment: internal error: unknown span kind")
		case spanList:
			b = d.list(lines[s.start:s.end], prev.end < s.start)
		case spanCode:
			b = d.code(lines[s.start:s.end])
		case spanOldHeading:
			b = d.oldHeading(lines[s.start])
		case spanHeading: