dAFCGClet ringlet ringlet ring1FIG 1=120XXXX443325577555X555333let ringlet ringlet ring3X55755755573333437505753333let ringlet ringlet ringlet ringlet ring56575XX50503333367FIG 2 55577555X555333let ringlet ringlet ring87½7½5790803333937505753333let ringlet ringlet ringlet ringlet ringlet ring106575785553331112FIG 35577555X555333let ringlet ringlet ring13X7½7½5755585503331437505753333let ringlet ringlet ringlet ringlet ring15657553108033331617FIG 45577555X555333let ringlet ringlet ringlet ringlet ring18X989757909733331937505753333206575XX6575657565755575333321let ringlet ringlet ring22FIG 5XXXXXXXX3333235577555X555333let ringlet ringlet ring24X557557555733332537505753333let ringlet ringlet ringlet ring266575XX5050333332755577555X555333let ringlet ringlet ring287½7½57908033332937505753333let ringlet ringlet ringlet ringlet ring30657578555333315577555X555333let ringlet ringlet ring32X7½7½5755585503333337505753333let ringlet ringlet ringlet ring3465755310803333355577555X555333let ringlet ringlet ringlet ringlet ring36X989757909733333737505753333386575XX6575657565755575333339