Encrypt the following plain text using the key given:
Plain Text : Lord Rama was a great king.
Key:
abcdef ghi jk l mnopqr st uv wxyz
YNLKXBSHMIWDP JROQVFEAUGTZC

What is the key space if we use alphabet = {a,b,c,d,e,f}

Decrypt the following cipher text with the key given
Cipher Text : libimi wio i rlkif dxmr
Key:
abcdefghi j kl mn opqrstuvwxyz
i s ybkjr uxedzq mct plofnbwgah

Decipher the following cipher text:

LOJUM YLJME PDYVJ QXTDV SVJNL DMTJZ WMJGG YSNDL UYLEO SKDVC

GEPJS MDIPD NEJSK DNJTJ LSKDL OSVDV DNGYN VSGLL OSCIO LGOYG

ESNEP CGYSN GUJMJ DGYNK DPPYX PJDGG SVDNT WMSWS GYLYS NGSKJ

CEPYQ GSGLD MLPYN IUSCP QOYGM JGCPL GDWWJ DMLSL OJCNY NYLYD

LJQLO DLCNL YPLOJ TPJDM NJQLO JWMSE JGGJG XTUOY EOOJO DQDMM

YBJQD LLOJV LOJTV YIOLU JPPES NGYQJ MOYVD GDNJE MSVDN EJM