Gullah allows a modal verb before the anterior tense marker and the completive aspect marker as in She might been done cook 'She may have cooked [already]' (Cunningham 1992: 51). Frank (2007: 161) reports as follows:
The following is the standard set of preverbal TAM markers in Gullah:
(1)
been anterior tense
gwine prospective mood
da imperfective aspect
done completive aspect
All four of these TAM markers would rarely, if ever, co-occur in the same verb phrase, but the relative order is as follows:
(2)
done + been + da + gwine + VERB
Source: Cunningham 1992: 51