You can ring touches of 90 true changes of Grandsire Doubles in 507 different ways using rotations of these 59 callings. All feature extremes, bingles or both. The first four are easy to remember 3-part compositions, while the remainder are one-parters:

 90 sebsebseb
 90 sbesbesbe
 90 gebgebgeb
 90 gbegbegbe

 90 sssesesbe
 90 sssesebge
 90 sssegbese
 90 sssebsese
 90 sssebpgbe

 90 sspseggge
 90 sspsebgbe
 90 sspsbspge
 90 sspgbgpge
 90 sspgbesbe
 90 sspgbebge
 90 ssepsbpse

 90 spsegbesb
 90 spsebsesb
 90 spsbebpsb
 90 spgesbsep
 90 spgeggpsb
 90 spgegbgep
 90 spgbegesb
 90 spbpsbesb

 90 sesebsbeb
 90 sesbebsbe

 90 segggeggp
 90 segggegeb
 90 seggepsbp
 90 segbgpseb
 90 segbegbgp
 90 segbegbeb
 90 segbebseb

 90 sebsbegbe
 90 sebgebsbe
 90 sebgbeggp
 90 sebgbegeb
 90 sebeppebp

 90 sbppgbpbp
 90 sbpbpgpbp

 90 sbesbebge
 90 sbeggpgbe
 90 sbegeggge
 90 sbegebgbe
 90 sbegbgpbp
 90 sbebpgbgp
 90 sbebpgbeb
 90 sbebgebge

 90 pgeggpgbg
 90 pgbpepgbe
 90 pgbpepbpb
 90 pgbepegge
 90 pgbegegbg
 90 pgbebgegg
 90 pegepebge

 90 gggegegbe
 90 gggebgege
 90 gegebgbeb
 90 gegbebgbe