sudden /ˈsʌd.ən/ /ˈsʌdn/
unexpected /ˌʌn.ɪkˈspek.tɪd/ /ˌʌnɪksˈpɛktɪd/
suddenly /ˈsʌd.ən.li/ /ˈsʌdənli/
unexpectedly /ˌʌn.ɪkˈspek.tɪd.li/ /ˌʌnɪksˈpɛktɪdli/