Kouwenberg & Lefebvre (2007) point out that propositional verbs select complement clauses introduced by complementizer ku, whereas emotive verbs select clauses introduced by complementizer pa. Pensa 'think', ke sa/ kièr sa 'think, believe'; literally: 'want know' and kere 'believe, think' are in the former category, whereas ke 'want' is in the latter. Maurer (1988: 176) argues that the pa-clause is a subjunctive. This is supported by the unacceptability of the mood marker lo in pa-clauses.
Source: Maurer 1988: 178
Source: Maurer 1988: 176
Source: nd: 25 June 2009, p.3
Source: nd: 3 July 2009, p.5