awk 'BEGIN{ flg = 1 } 
    {
    if( $1 == "repet" ){
         rep = $3 ;
         if( flg == 0){printf("\n %14e ", rep ) ;  flg=1 }
     }
    if( $1 == "gain" ){ 
         gain = $3 
         printf(" %14e ", gain )
         flg=0
     }
}' $1