These two patterns are identical to fingerpicking patterns five and six except the second position of the right hand is used .The right hand i finger is now allocated to the third string and the m finger is allocated to the second string.
To use an optional bass pattern with the basic C chord the third finger of the left hand moves back and forward between the first and sixth strings. The other fretting fingers maintain the C chord with the third finger of the left hand moving between the fourth and fifth strings. Study the adjacent diagrams then try the following example that uses both chords.