Typical mistakes for Gregorian:
fregorian,  vregorian,  bregorian,  hregorian,  yregorian,  tregorian,  geegorian,  gdegorian,  gfegorian,  gtegorian,  g5egorian,  g4egorian,  grwgorian,  grsgorian,  grdgorian,  grrgorian,  gr4gorian,  gr3gorian,  greforian,  grevorian,  greborian,  grehorian,  greyorian,  gretorian,  gregirian,  gregkrian,  greglrian,  gregprian,  greg0rian,  greg9rian,  gregoeian,  gregodian,  gregofian,  gregotian,  grego5ian,  grego4ian,  gregoruan,  gregorjan,  gregorkan,  gregoroan,  gregor9an,  gregor8an,  gregorizn,  gregorisn,  gregoriwn,  gregoriqn,  gregoriab,  gregoriam,  gregoriaj,  gregoriah,  regorian,  gegorian,  grgorian,  greorian,  gregrian,  gregoian,  gregoran,  gregorin,  gregoria,  rgegorian,  gergorian,  grgeorian,  greogrian,  gregroian,  gregoiran,  gregorain,  gregorina,  ggregorian,  grregorian,  greegorian,  greggorian,  gregoorian,  gregorrian,  gregoriian,  gregoriaan,  gregoriann