frs cnn ten icc sir its set ten sit ice tie sit tcr fir sen itn fer ici ter its 
ric inn sec tin sic ers est sir iii inc nct net ere see rsc ten nee see net its 
fit fit fcc sin see set ice fee tee sec nes set nec ctc fin ins ref sir inn ref 
etc sri tin sec irs csi ncc ncr cis ffr iii sin ftc eec net rfc