There are 33 callings/touches (they cannot be called rotated) for 59 changes of Grandsire Doubles. Of these, five use conventional calls alone. The remainder need bingles or extremes or both:

59 ssspsp
59 psppsp
59 psbspp
59 bspsbp
59 bsbpsp

59 sspgep
59 sppgpp
59 sppebp
59 sesebp
59 sbppep
59 sbesep
59 sbepbp
59 psessp
59 pseggp
59 pgbgpp
59 pgbebp
59 pegesp
59 gpeppp
59 ggpgep
59 gggepp
59 gesbep
59 gebgep
59 gbpsbp
59 epspbp
59 eppepp
59 ebeppp
59 bpgebp
59 bpepgp
59 bgppep
59 bgesep
59 bgepbp
59 bgbepp
59 bebpep