Finally, by using three intervals of a third and just one second, the 'spreading-the-hand' pattern can be extended to a whole octave.
The four possible patterns (and their inverses) are:
The patterns transition via five adjacent notes and therefore rise/descend by fourths. Using STH11 as an example:
Here is the full MS for STH11, the first full-octave exercise.
By giving just the right hand, an even 'skinnier' shorthand version could be devised. You play up the chords in the first half, down the chords in the second half.
Play again from the shorthand version. This is the type of sketch version offered for the next three exercises.
For extra practice and endurance (with the usual caution against over-straining), we can double the up/down movement before changing positions.
Here's the first line of the full MS for STH15.
That covers patterns 1 and 4. STH16 practices patterns 2 and 3 in the same way. Fingers 1, 2, 4 and 5 (both hands) stay in the same position while the middle finger plays the two notes between them in turn.
Remind yourself to be on your guard against strain in the hands and wrists. Do NOT "work through the pain (or strain)". Rather, slowly build up your capacity to play these advanced exercises without strain.