The standard contemporary form for clubs is TREFY (NOT trefi, for the last letter resembles the Nautilus workout grunt, not "ee" as in "eek"). The alternate form, attested by Dal' (see TOLKOVYI SLOVAR') is KRESTY (again, hard "y" sound, and stressed). An even rarer and outmoded alternate form is ZHLUDI. Requiescat in pace, ladno? Helena Goscilo