"M12 21.5C10.65 20.65 8.2 20 6.5 20C4.85 20 3.15 20.3 1.75 21.05C1.65 21.1 1.6 21.1 1.5 21.1C1.25 21.1 1 20.85 1 20.6V6C1.6 5.55 2.25 5.25 3 5C4.11 4.65 5.33 4.5 6.5 4.5C8.45 4.5 10.55 4.9 12 6C13.45 4.9 15.55 4.5 17.5 4.5C18.67 4.5 19.89 4.65 21 5C21.75 5.25 22.4 5.55 23 6V20.6C23 20.85 22.75 21.1 22.5 21.1C22.4 21.1 22.35 21.1 22.25 21.05C20.85 20.3 19.15 20 17.5 20C15.8 20 13.35 20.65 12 21.5M12 8V19.5C13.35 18.65 15.8 18 17.5 18C18.7 18 19.9 18.15 21 18.5V7C19.9 6.65 18.7 6.5 17.5 6.5C15.8 6.5 13.35 7.15 12 8M13 11.5C14.11 10.82 15.6 10.5 17.5 10.5C18.41 10.5 19.26 10.59 20 10.78V9.23C19.13 9.08 18.29 9 17.5 9C15.73 9 14.23 9.28 13 9.84V11.5M17.5 11.67C15.79 11.67 14.29 11.93 13 12.46V14.15C14.11 13.5 15.6 13.16 17.5 13.16C18.54 13.16 19.38 13.24 20 13.4V11.9C19.13 11.74 18.29 11.67 17.5 11.67M20 14.57C19.13 14.41 18.29 14.33 17.5 14.33C15.67 14.33 14.17 14.6 13 15.13V16.82C14.11 16.16 15.6 15.83 17.5 15.83C18.54 15.83 19.38 15.91 20 16.07V14.57Z"