1 2 3 4 5 6 7 8 9 10
1,2,3,4,5,6,abc; 11,12,13,14,15,16,def; 21,22,23,24,25,26,ghi; 31,32,33,34,35,36,jkl; 41,42,43,44,45,46,mno; 51,52,53,54,55,56,pqr; 61,62,63,64,65,66,stu; 71,72,73,74,75,76,vwx; 81,82,83,84,85,86,y_z; 91,92,93,94,95,96,+-+;