For an RSA algorithm with a modulus M$=13$x$7=91.$ The public

key KP is given by:

$($a$)(3,91)($b$)(8,91)($c$)(9,91)($d$)(5,91)$

$($a$)($b$)($c$)($d$)$

The private key Ks is given by:

$($a$)(13,91)($b$)(31,91)($c$)(29,91)($d$)$ neither a not b nor c

$($a$)($b$)($c$)($d$)$

$[$EEE$8119]$

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For the character $32$ the cypher text is given by:

$($a$)3($b$)50($c$)2($d$)$ neither a not b nor c

$($a$)($b$)($c$)($d$)$

For the character $64$ the cypher text is given by:

$($a$)64($b$)63($c$)62($d$)$ neither a not b nor c

$($a$)($b$)($c$)($d$)$

For the cypher text $127$ the plain text is given by:

$($a$)40($b$)43($c$)41($d$)$ neither a not b nor c