Thanks Mamyalynne.
I have ????E?.
But either there is an extra letter in the wordplay or you have to remove a string of letters.
So abode could be Ode, ab being extra. Or Support could be port.
23 '[bl]end' of 'bacteriA' instead of the first 'e' in a word for sewage = def 'rich'.
33 'support' is the one used in golf + the sword (with it's first 'e' an extra letter).