How to use string with different sizes as a text in figure?

I have three Char matrix say, S1 (1x112), S2 (1x26) and S3 (1x36), all three are different sizes.

I would like to put S1, S2 and S3 as a text in a figure such that S1 is in the first line, S2 in the second and S3 in the third line.

When I run

str = [S1; S2; S3]

it says,

Error using vertcat
Dimensions of arrays being concatenated are not consistent.
% i would like to run
text(0.5,1.5,str);

How to use this as a text in figure?

Answer 1

[KSSV]

str1 = 'I' ;
str2 = 'Love' ;
str3 = 'MATLAB' ;

str = sprintf('%s\n%s\n%s',str1,str2,str3);
[X,Y,Z] = peaks(50) ;
pcolor(X,Y,Z) 
shading interp
text(0,0,str)

[MP]

Thank you so much @KSSV

[KSSV]

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