How to do data entry & analysis of three-tier test?

#1
Can somebody please explain to me in detail...

How to do data entry and descriptive data analysis for such three-tier test questions as

1.1 Which one of the following might be one of the consequences of global warming?
a. Drought
b. Skin cancer
c. Acid rain

1.2 Which one of the following is the reason for your answer to the previous question?
a. Acid rain becomes more frequent as a result of global warming.
b. Global warming leads to an increase in solar radiation, which can cause skin cancer.
c. If global warming increases, there will be more deserts in the world.

1.3 Are you sure about your answers given to the previous two questions?
a. Yes
b. No

PLEASE NOTE: 1.1, 1.2 and 1.3 are parts/tiers of the same question.

I want to do coding like this but do not know how to do in spss:

1, 1 and 1 codes for answers of 1.1, 1.2 and 1.3 respectively as FULLY CORRECT
1, 0 and 1 codes for answers of 1.1, 1.2 and 1.3 respectively as MISCONCEPTION
0, 1 and 1 codes for answers of 1.1, 1.2 and 1.3 respectively as MISCONCEPTION
0, 0 and 1 codes for answers of 1.1, 1.2 and 1.3 respectively as MISCONCEPTION
0, 1 and 1 codes for answers of 1.1, 1.2 and 1.3 respectively as LACK OF KNOWLEDGE
1, 0 and 1 codes for answers of 1.1, 1.2 and 1.3 respectively as LACK OF KNOWLEDGE
0, 0 and 0 codes for answers of 1.1, 1.2 and 1.3 respectively as LACK OF KNOWLEDGE
1, 1 and 0 codes for answers of 1.1, 1.2 and 1.3 respectively as LUCKY GUESS