During co-design sessions with students, we explored the link between Belbin's profiles, roles used in project management and speech acts used to specify the speaker's intentions, which are complementary keys of successful collaboration. Identifying links between each Belbin's profile and some particular speech acts would allow us to consider automatically identifying team members' roles or recommending ways to better communicate. For this study, discourses of 14 groups have been coded in speech acts and analyzed to find links with the primary and secondary Belbin's profiles of 31 students. We were interested in the proportion of speech acts per Belbin's profile. We found some links as the coordinator profile intervenes less often, but answers more questions from the team or the completer-finisher profile often validates the interventions of the others members. Extending this work would involve analyzing speech acts patterns links with Belbin's roles and how this can support successful collaborations.