In Juba Arabic we find interrogative phrases which are always in non-initial position. This is the case of the locative interrogative wen 'where'; other interrogative phrase types can occur both in initial and non-initial position, such as munú 'who' (when munú is subject, it is in initial position).
Source: Manfredi 2005: 120
Source: Manfredi 2005: 110
Source: Manfredi 2005: 111