states: factor out periodic pattern
states: factor out periodic pattern

vanloswang/tchannel,chenwenbin928/tchannel,i/tchannel,vanloswang/tchannel,i/tchannel,savaki/tchannel,benfleis/tchannel,Zirpon/tchannel,hustxiaoc/tchannel,Zirpon/tchannel,i/tchannel,RyanTech/tchannel,vanloswang/tchannel,chenwenbin928/tchannel,RyanTech/tchannel,savaki/tchannel,sasa233/tchannel,benfleis/tchannel,bunnyblue/tchannel,hustxiaoc/tchannel,chenwenbin928/tchannel,benfleis/tchannel,Zirpon/tchannel,savaki/tchannel,bunnyblue/tchannel,bunnyblue/tchannel,sasa233/tchannel,hustxiaoc/tchannel,RyanTech/tchannel,sasa233/tchannel