⇣ bifron ⇣bif100ron00016bif500ron00080bif1000ron00160bif2000ron00320bif5000ron008bif10000ron016⇣ bifron ⇣bif1,00000ron160bif5,00000ron800bif10,00000ron1600bif25,00000ron4000bif50,00000ron8000bif100,00000ron16000