Many punchcards that obey the usual restrictions for tuck, in particular, may be used to create “random” mazes and mosaics, with color changes happening every two rows. Test swatches will show differences in surface texture, patterning, width, and height of the knit. It is useful to use clearly contrasting colors to study how the structure of the fabric is affected by different techniques. This test series explores the quality of the stitches created, along with using different knit carriage cam settings, although this repeat does not produce designs typical of either mosaics or mazes.
The swatches were knit during a class demo, for easy visibility, not as studies for finished garments or accessories. They were produced on Brother punchcard KM, using a single bed color changer. Electronic KMs advance a row for each pass of the carriage regardless of its beginning position/side. As noted in later blog post shares, such fabrics are produced more quickly and easily if an electronic is available with 2 compatible carriages for use.
Yet another single color variation, missing here, would be to use opposing buttons for tuck/slip.
The first preselection row is toward the color changer. The FI pattern front with a bit of bleed-through where floats were hung up on the purl side
tuck 1 color 
slip 1 color 
tuck 2 colors 
slip 2 colors 
last but not least, slip stitch adding a third color front, still changing colors every 2 rows
This is a factory punchcard design, a smaller repeat. 
The repeat enlarged and punched for use in the pictured samples 