Color classification
Double position [right Electric position]]
Double position [no electric position]]
Double position [double electric position]]
Double position [left electric position]]
Three-person position [without electric position]]
Three-person position [double electric position]]
Three-person position [left electric position]]
Three-person position [right Electric position]]
Four-person position [no electric position]]
Four-person [double electric]]
Four-person [left electric position]]
Four-person position [right Electric position]]
Applicable number of persons