Issue facing in working with concatenated list

procedure(c()

cv=geGetEditCellView()

TT=nil

foreach(tan cv~>instances

foreach(tan1 tan~>prop~>name

          if(member(tan1 list("PAD")) 

                     then

         b=list(tan)

        TT=append1(b TT)

printf("%L", tan)

))

for(i 0 1

mm=nth(i TT)

if(nth(i TT)

;printf("%L", mm)

println("hh")

foreach(prop2 mm~>prop

        foreach(prop1 list(prop2 )

                                                                if( rexMatchp("vddcore3v" prop1~>name) == t  then

                                                                                rexCompile("!")

                                                                                nmOfLbl = rexReplace(prop1~>value "" 0)

                                                                                padLabel = append1(padLabel list(prop1~>name nmOfLbl))

                                                                )                             

                                                                )

      ))

)))

problem:   Just FYI 

TT= (db:0x1879a313    (db:0x1879a312 nil))

I want to work on one dbid at a time. but second dbid is having 2 element which is creating issue.

but after nth command nth (0 TT) is taking first element out but in second element  is combination of two ((db:0x1879a312 nil)) .

Pls let me how to work on one element at a time if its a concatenated list.