  In this paper we put forward the idea that the comoving Hubble horizon
undergoes multiple stages of contraction (a.k.a. inflationary phase) and
expansion. The observable inflation, that produces the CMB anisotropies and
generates primordial gravitational waves, follows and is followed by multiple
early and late inflations. The trans-Planckian censorship conjecture restricts
the duration of each inflationary phases and determines their Hubble rates.
Early inflations could start immediately after the universe emerges from the
Planck era. It alleviates the initial condition problem for the lower-scale
observable inflation. Late inflations collectively assist the observable
inflation to accommodate the present horizon. Moreover, it makes eternal
inflation possible and consistent with obserbvations.
