### Greek

lookup caltGreekUCdiph {
  sub @GreekUCdiphIOTA Iota' by Iotadieresis;
  sub @GreekUCdiphUPSILON Upsilon' by Upsilondieresis;
} caltGreekUCdiph;

lookup caltGreekUC {
  sub @GreekUCAcc' @GreekUC by @GreekUCcalt;
  sub @GreekUC @GreekUCAcc' by @GreekUCcalt;
  sub @GreekUCAcc' space @GreekUC by @GreekUCcalt;
  sub @GreekUC space @GreekUCAcc' by @GreekUCcalt;
} caltGreekUC;