They also represent the oppositions of time and space, and tree and stone. The most commonly recurring characters outside of the Earwicker family are the four old men known collectively as "Mamalujo" (a conflation of their names: Matt Gregory, Marcus Lyons, Luke Tarpey and Johnny Mac Dougall). These four most commonly serve as narrators, but they also play a number of active roles in the text, such as when they serve as the judges in the court case of I.4, or as the inquisitors who question Yawn in III.4. Tindall summarises the roles that these old men play as those of the Four Masters, the Four Evangelists, and the four Provinces of Ireland ( "Matthew, from the north, is Ulster; Mark, from the south, is Munster; Luke, from the east, is Leinster; and John, from the west, is Connaught"). According to Finn Fordham, Joyce related to his daughter-in-law Helen Fleischmann that "Mamalujo" also represented Joyce's own family, namely his wife Nora (mama), daughter Lucia (lu), and son Giorgio (jo). In addition to the four old men, there are a group of twelve unnamed men who always appear together, and serve as the customers in Earwicker's pub, gossipers about his sins, jurors at his trial and mourners at his wake. The Earwicker household also includes two cleaning staff: Kate, the maid, and Joe, who is by turns handyman and barman in Earwicker's pub. Tindall considers these characters to be older versions of ALP and HCE. Kate often plays the role of museum curator, as in the "Willingdone Museyroom" episode of 1.1, and is recognisable by her repeated motif "Tip! Joe is often also referred to by the name "Sackerson", and Kitcher describes him as "a figure sometimes playing the role of policeman, sometimes [...] a squalid derelict, and most frequently the odd-job man of HCE's inn, Kate's male counterpart, who can ambiguously indicate an older version of HCE." Joyce invented a unique polyglot-language or "idioglossia" solely for the purpose of this work. This language is composed of composite words from some sixty to seventy world languages, combined to form puns, or portmanteau words and phrases intended to convey several layers of meaning at once.