Bruce Lee listed 21 phases of progressive sparring:
lead jab only
lead hand only
lead hand and foot only
lead hand and foot v boxing
lead hand and foot v kicboxing
lead hand and foot v kicks only
jab v cross
boxing v boxing
boxing v kicks
boxing v box and lead foot
boxing v kickboxing
boxing v lead foot
boxing and lead foot both
boxing and lead foot v kicks
boxing and lead foot v kickboxing
kickboxing both
add knees and elbows
add takedowns and throws
add grappling
kickboxing v grappling
boxing v grappling
