??periodicity
??ENUMERATED {
????sym2, sym7, sym1×14, sym2×14, sym4×14,
sym5×14, sym8×14, sym10×14, sym16×14, sym20×14,
????sym32×14, sym40×14, sym64×14, sym80×14,
sym128×14, sym160×14, sym256×14, sym320×14, sym512×14,
????sym640×14, sym1024×14, sym1280×14,
sym2560×14, sym5120×14,
????sym6, sym1×12, sym2×12, sym4×12, sym5×12,
sym8×12, sym10×12, sym16×12, sym20×12, sym32×12,