In the following you can find $10$ cryptograms, that are created by Vigen$$ere cipher, where the plaintext is English text and the keyword is a meaningful English word. You are required to decipher the cryptogram that matches with your Student$-$ID$.$

Marking Criteria:

$1$ mark for determination of at least two patterns of length no less than $4$ characters.

$1$ mark for determination of the distances between the appearances of the patterns founded in the previous

step $($highlight the patters in the text$/$cryptogram$).$

$3$ marks for obtaining the key$-$length, i$.$e$.,$ the greatest common divisor of all the distances you computed

in the previous step.

$3$ marks for separation of the cryptogram into $$k$$ cryptograms, where $$k$$ is the key$-$length computed in

the previous step.

$3$ marks for the determination of the keyword, with proper justification for each letter of the keyword

$($i$.$e$.,$ applying letter frequency$).$

$2$ marks for deciphering the cryptogram and obtaining the correct and readable plaintext.

Note that determination of the keyword$/$plaintext from incorrect results in previous steps is not acceptable.

iyselxmteqsjtfxfbteezsrfeheeiysgtveitcnxidrzomrvmsvapoidctfzaxavioqsmopcupcmfwdkjelaevbmjezswimwceevqjqmqszaqwiytehbemacusulmxhzhxlwptmsmztqswfpxpgrztfcezsmssjwadepfneytrgulrppirgzvqctfzaxudewomezzzbhlrpdkvfcracdwmtxmgpoqapurrhjzrexkitpwfwvgbxirtzguppeiiideydtnwuswtdihfchmirpmzgwhrbelwtdihfcoqnrgbxefivfpqjmrkhipoqntcoeeucjtjqxkhzljyhqevbeprfperftktigostxkrysdvfuijrvpxaxkgxthqjkwmtwmizcoelqsvgxlwqmksodmhtcmjyzqhkwhlxqsrbelrmapgfoxttvlqpvuteqfhmfwkvflrmapgjdsriysepwspmswlpgpszftrexxvudmzifhiphqhzuoavaevfutiedwqsjtfdxfbalurrzhzvuiyatlqacxguelqbrbzoiervbelrfhftusiptjkizwqhkfvnxggvkbdfmhvrpyjqxjhfwtqgdiulxudeospxttaoqlrqhvtbdxqctfzaxudeomrsdxkvnlrpiysbfwfgrzjlrxdbwbwkagzhixraivhilxmachipendmsnprfxfbfogdnghprvmeywddceivatlvqeiwwlxqzvmtjwftdgjytdxmoupoqntfzaxahpgupqeqfhielqteqsjtfxfbbyhfwvrfnvkekwpyoqnjospwqrisulrptzhipvfwvgbxiagkvfvralcseriaufbfzjfwvajdwguwwdtizikcepxqgdwopxttfhipvfwzgjdatngfjgeftbszdceivatlvqpcgpnexavrtjqytkfjnwkhksndhuuwwflrpwvzmxezxehszhgrvrusiodeqfaxaugicwmozvmdccbifgzdxqbjdvmpurbsznvkekctjwftdgbwwarrzmphmhpanpxdxtgzdxqbjitpxiduwgqidtehlpcedesjdtgqcwdhluavhipsfwvfjdoqekgfnvqitzflvxnzhjdvqflwsphfwrhdzqbjkworxttjsdcifzvmgcsyiysqffxxtcoplmhkccpmziiodeenavhiciqsvgjrreqrgfosziysozxudecgaynazqlpcenjhfxwitisqffxxjvfovukvgudlmbzfbyhmscsnlrewfkfolalkvfqeoiffjdefxfbqcsnavadzyxsssvdipifqpywfglqultgqcwdvikrimqesenjhfxxtxjwtelqlvzmvraleftlgdnghpdceivanpvwavooolqacabyyetuhipozpggbnobgfpmpquckvftvodegucyoizcoxgqazsdpfgxchbdceivaxsmowrdqwmqsvfszvodiffnxucxqpoiearhfcmztcubxexrzhfppspusttkztuoqffxxtyfjgdnghpdceivavdmzvkvfomerisuppavrfjelyeiccwiybzzmpvmcuypmpuiqgvrkqhksefwucxsmwmbizqdfvhtjhpoiexxbqffxxtyfjgdnghpdceivat