There are many other note combinations
There are many other permutations of notes to run through. Try doing the same exercise but swap the bass for a slap in all cases, like so:
S T T T
Now try to folowing:
T S S S
T B B B
S B B B
B S S S
Learn some music terminology you'll need.
More djembe exercises to develop your co-ordination, technique and sounds.