Copy multiple column and table into single row

Hi I have a situation wherein the data is as below.

Row 1: A B C D E F G
Row 2: H I J K L
Row 3: M N O P Q
Row 4: 1 2 3 4 5 6 7
Row 5: 8 9 10 11 12
Row 6: 13 14 15 16 17

Results needs to be

Row 1 : A B C D E F G H I J K L M N O P Q
Row 2: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17


Thanks for your help on this.

row 1 2 3 will haVE letters

row 3 4 5 will have numbers only