Compute the given quantity using the strings

$=$baab,$=$caaba,$=$bbab

$($a$)$

$($b$)$

$($c$)$

$($d$)$

$($e$)||$

$($f$)||$

$($g$)||$

$($h$)||$

$($i$)$

$($j$)$

$($k$)$

$(1)$

List all strings over $x=\{0,1\}$ of length $2.$

List all strings over $x=\{0,1\}$ of length $2$ or less.

List all strings over $x=\{0,1\}$ of length $3.$

List all strings over $x=\{0,1\}$ of length $3$ or less.

Find all substrings of the string babc

Find all substrings of the string aabaabb.