英和和英

Five plus three is [equals] eight.

Thirteen is said to be an unlucky number.

Six times five is thirty.

6 multiplied by 5 equals 30.

Three from seven is [leaves] four.

Seven minus three is [leaves, equals] four.

break a code

Thirteen is believed to be an unlucky number.

in code

break the code

the code in force

the multiplication of four by three gives twelve

four times three equals twelve

The number thirteen is regarded as unlucky in Western countries.

Five less two is three.

One and one make(s) two.

a private code

compile an index

crack a code

to decipher a code

to decipher a code

Two times three.

It is absurd to believe that the number 13 brings bad luck.

an amended code

a Visinel secret coding

Five and eight is thirteen.

attach a code to

Crack a code

to color-code

a sentence converted to code