Alguien me podría ayudar con esta para traducirlo porfavor!! no logro entenderlo bien

relative clauses in UA normally come directly after the head noun, as in (1)- (2), but at last three other possibilities must be mentioned, all of which are sufficiently widespread in the family that they can safely be reconstructed for P-UA. First, there may be not overt head at all; this possibility will be examined below under headless relatives. Secund, the shoshoni example below in atypical of the normal UA pattern in that the preposed relative is separated from the head by an element of the main clause.

Espero puedan ayudarme con esto!