The unmarked construction does not use a copula. However, very rarely a copula is found and may represent the retention of an archaic construction.
Source: Smith 1974-5: 5123
Source: Smith 1974-5: 5062
Source: Smith 1974-5: 5092-4
Source: Smith 1974-5: 1629
Source: Smith 1974-5: 1450-2