The Georgian language , however , uses the singular form when the quantity is specified , so in practice the plural of `` tetri '' is just `` tetri '' . However , the Georgian language uses the singular form when the quantity is specified , so in practice the plural of `` tetri '' is just `` tetri . '' However , the Georgian language is the singular form when the quantity is specified , so that in practice the plural of `` tetri '' only uses '' tetri `` .