Table:
text: Aliso Creek (Orange County)
Watershed
Tributaries
Name_ Variant_Names Source_ Source_coordinates Length_ Mouth Mouth_coordinates_
Mouth  N/A N/A N/A Aliso Creek Beach, Laguna Beach 33°30′38″N 117°45′12″W﻿ / ﻿33.5105°N 117.7532°W
Wood Canyon Creek  Aliso Viejo 33°35′39″N 117°44′22″W﻿ / ﻿33.5941°N 117.7394°W 2.8 miles (4.5 km) Aliso Canyon—right bank of Aliso Creek 33°32′28″N 117°44′13″W﻿ / ﻿33.5411°N 117.7369°W
Sulphur Creek Arroyo Salada, Sulpher Creek, Salt Creek, Cañada Salada North Laguna Niguel 33°33′33″N 117°41′04″W﻿ / ﻿33.5591°N 117.6844°W 4.5 miles (7.2 km) Head of Aliso Canyon—left bank of Aliso Creek 33°32′32″N 117°42′16″W﻿ / ﻿33.5422°N 117.7044°W
Aliso Hills Channel  South Laguna Hills  4.5 miles (7.2 km) Aliso Viejo—left bank of Aliso Creek 

text: Aliso Creek (Orange County)
Watershed
Tributaries
Name_ Variant_Names Source_ Source_coordinates Length_ Mouth Mouth_coordinates_
Dairy Fork Dairy Fork Storm Drain South Laguna Woods  3 miles (4.8 km) Aliso Viejo- right bank of Aliso Creek 
Munger Creek Munger Creek Storm Drain Lake Forest  1 mile (1.6 km) Mission Viejo—right bank of Aliso Creek 
Unnamed northern fork  Portola Hills  2.5 miles (4.0 km) Mission Viejo—right bank of Aliso Creek 
English Canyon English Canyon Creek, English Canyon Channel Mission Viejo 33°39′30″N 117°38′28″W﻿ / ﻿33.6583°N 117.6411°W 3.5 miles (5.6 km) Mission Viejo—left bank of Aliso Creek 33°37′42″N 117°40′52″W﻿ / ﻿33.6283°N 117.6811°W
Source  Cleveland National Forest, Portola Hills 33°42′10″N 117°37′21″W﻿ / ﻿33.7027°N 117.6225°W N/A N/A N/A

Question: How many different names -lrb- without variants -rrb- are there in Aliso Creek (Orange County) ?