MT      200610-1        100     2757
    MT      200610-10       100     6753
    MT      200610-100      100     15173

chrMT   2756    2757    200610-1
    chrMT   6752    6753    200610-10
    chrMT   15172   15173   200610-100

awk 'BEGIN{FS=="t";OFS=="t"}{print "chr"$1,$4-1,$4}' test_ace_geno1.map
    chrMT 2756 2757
    chrMT 6752 6753
    chrMT 15172 15173

awk 'BEGIN{FS=="t";OFS=="t"}{print "chr"$1,$4-1,$4,$2}' test_ace_geno1.map
     200610-16 2757
     200610-10 6753
     200610-100 15173

MT^I200610-1^I100^I2757$
    MT^I200610-10^I100^I6753$
    MT^I200610-100^I100^I15173$

$ cat -e ip.txt
    MT      200610-1        100     2757^M$
    MT      200610-10       100     6753 ^M$
    MT      200610-100      100     15173^M$

$ awk 'BEGIN{FS=="t";OFS=="t"}{print "chr"$1,$4-1,$4}' ip.txt
chrMT 2756 2757
chrMT 6752 6753
chrMT 15172 15173

$ awk 'BEGIN{FS=="t";OFS=="t"}{print "chr"$1,$4-1,$4,$2}' ip.txt
 200610-16 2757
chrMT 6752 6753 200610-10
 200610-100 15173

$ perl -lane 'print "chr$F[0]t", $F[3]-1, "t$F[3]t$F[1]"' ip.txt
chrMT   2756    2757    200610-1
chrMT   6752    6753    200610-10
chrMT   15172   15173   200610-100

$ perl -i -pe 's|rn|n|' ip.txt
$ cat -e ip.txt
    MT      200610-1        100     2757$
    MT      200610-10       100     6753 $
    MT      200610-100      100     15173$

$ awk -v OFS="t" '{print "chr"$1,$4-1,$4,$2}' ip.txt
chrMT   2756    2757    200610-1
chrMT   6752    6753    200610-10
chrMT   15172   15173   200610-100

gawk -v RS='rn' -v OFS="t" '{print "chr"$1,$4-1,$4,$2}' ip.txt

awk '{print "chr" $1, ($NF - 1), $NF, $2}' file.txt

% awk '{print "chr" $1, ($NF - 1), $NF, $2}' file.txt
chrMT 2756 2757 200610-1
chrMT 6752 6753 200610-10
chrMT 15172 15173 200610-100