Linux

0 13400000 sil
13400000 14400000 a
14400000 14900000 dh
14900000 15300000 a
15300000 16500000 R
16500000 17000000 k
17000000 17300000 u
17300000 17600000 th
17600000 17900000 sil
17900000 18400000 th
18400000 18900000 a
18900000 19600000 g
19600000 19900000 u
19900000 20500000 n
20500000 20800000 dh
20800000 21600000 a
21600000 22200000 b
22200000 22800000 a
22800000 23300000 d
23300000 24600000 i
24600000 28700000 sil
28700000 30600000 E
30600000 31100000 dh
31100000 32400000 A
32400000 32700000 v
32700000 33100000 a
33100000 33700000 dh
33700000 34100000 u
34100000 34400000 sil
34400000 35000000 k
35000000 35500000 o
35500000 36500000 qn
36500000 36900000 ch
36900000 37300000 a
37300000 38100000 m
38100000 38600000 sil

13400000 17600000 adhaRkuth
17900000 24600000 thagundhabadi
28700000 34100000 EdhAvadhu
34400000 38100000  koqncham

while ()
    set a = `cat $word | head -$file |tail -1 | cut -d " " -f3`
    set b = `cat $word | head -$file |tail -1 | cut -d " " -f2`
    set c = `cat $word | head -$file |tail -1 | cut -d " " -f1`
@ nextline = $file  + 1
    set i = `cat $word | head -$nextline | tail -1 | cut -d " " -f3`
    set j = `cat $word | head -$nextline | tail -1 | cut -d " " -f2`
    set k = `cat $word | head -$nextline | tail -1 | cut -d " " -f1`
@ prevline = $file  - 1
    set x = `cat $word | head -$prevline | tail -1 | cut -d " " -f3`
    set y = `cat $word | head -$prevline | tail -1 | cut -d " " -f2`
    set z = `cat $word | head -$prevline | tail -1 | cut -d " " -f1`
if ($a == sil && $b == $k) then
        echo $k $y
else if ($a == sil && $b != $k) then
        echo $y
else
        echo "$a\c"
endif

13400000
adhaRkuth17900000 17600000
thagundhabadi28700000 24600000
EdhAvadhu34400000 34100000
koqncham38600000 38100000

awk '$3=="sil"{if(p)print p,$1,w;w="";getline;p=$1}{w=w $3}' file