The inclusion of the word 'AND' suggests that you make all turns to the left regardless of circuit direction.
I don't see the problem you are having, the regulation is pretty specific and extremely clear insofar that, as a rule, turns are to be made to the left
except when (e.g.) ATC or the signal square indicates otherwise.
Note the second part of b) - this states "
unless ground signals otherwise indicate." - that means that (eg) in the signal square on the ground you could expect to see the sign for a right hand circuit if a right hand circuit was in use. In such a case, turns would be to the right. Otherwise all turns are made to the left.