The following list represented the tokens between `sdb` and `sd$MAX` (while `MAX` range could be `c`-`z`)

For example:

```
MAX=z
list=$(eval echo sd{b..$MAX})
echo $list

```

strings are: ( example ) 

```
sdb sdc sdd sde sdf sdg sdh sdi sdj sdk sdl sdm sdn sdo sdp sdq sdr sds sdt sdu sdv sdw sdx sdy sdz

```

my question how to shift the list each loop to the next string

example:

```
for i in disk1 disk2 disk3 disk4 ..................
do
echo $i    <...syntax...>
done

```

expected output 

```
disk1   sdb
disk2   sdc
disk3   sdd
disk4   sde
.
.
.

```