const strconv.digits

7 uses

	strconv (current package)
		itoa.go#L61: 		return digits[i : i+1]
		itoa.go#L81: const digits = "0123456789abcdefghijklmnopqrstuvwxyz"
		itoa.go#L89: 	if base < 2 || base > len(digits) {
		itoa.go#L160: 			a[i] = digits[uint(u)&m]
		itoa.go#L165: 		a[i] = digits[uint(u)]
		itoa.go#L175: 			a[i] = digits[uint(u-q*b)]
		itoa.go#L180: 		a[i] = digits[uint(u)]